Forster, Robert L.

Halbert, Susan E.

Mowry, Thomas

Undetermined

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*IoSection 7Vectors of Plant PathogensCEREAL APHID TRANSMISSION OF BEAN COMMON MOSAIC VIRUSSusan Halbert1, Thomas Mowry1 and Robert Forster21. University of Idaho, Parma R/E Center, 29603 U of I Lane, Parma, ID 836602. University of Idaho, Kimberly R/E Center, 3793 N. 3600 E., Kimberly, ID 83341Bean common mosaic, caused by bean common mosaic virus (BCMV), has beenf epidemic in Idaho in 1989 and 1991. The virus is transmitted by aphids in a non-persistentmanner, and transitory aphids which do not colonize the crop are likely to be importantvectors.Massive flights of aphids are present in Idaho every year in July. These flights reflectemigration from maturing wheat and barley fields. Russian wheat aphids have beenparticularly abundant in some years and comprised over half the total sample in 1990.Transmission of BCMV by cereal aphids has not been reported in the literature. We aretesting cereal aphids for transmission of BCMVbecause of their abundance and potentialimportance as vectors.In preliminary assays, Schizaphis graminum (greenbug) transmits BCMV efficiently.Diuraphis noxia (Russian wheat aphid) has not transmitted the virus either in bulk assaysusing several hundred aphids per test plant or in individual feeding tests. Furtherexperiments are underway.47

Cereal Aphid Transmission of Bean Common Mosaic Virus

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Cereal Aphid Transmission of Bean Common Mosaic Virus

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